Re: [PATCH] Enable hashdist by default on 64bit NUMA

2009-03-02 Thread Benjamin Herrenschmidt
On Thu, 2009-02-26 at 22:24 +1100, Anton Blanchard wrote: > Hi David, > > > Hmmm... my bad, I think you need to keep the CONFIG_NUMA > > there too as there is a TLB usage penalty for non-NUMA > > systems if you only use CONFIG_64BIT there. > > Sorry that was my screwup, here's a fixed version.

Re: [PATCH] Enable hashdist by default on 64bit NUMA

2009-02-26 Thread David Miller
From: Anton Blanchard Date: Thu, 26 Feb 2009 22:24:32 +1100 > On PowerPC we allocate large boot time hashes on node 0. This leads to > an imbalance in the free memory, for example on a 64GB box (4 x 16GB > nodes): > > Free memory: > Node 0: 97.03% > Node 1: 98.54% > Node 2: 98.42% > Node 3: 98.5